What is OCAJP Exam? Oracle′s Java SE Programmer I (OCAJP) Exam to achieve Oracle Certified Associate, Java SE Programmer Certification. This is the entry level of Java Certification. For every new version of Java, this exam will be updated with the new changes in the Java technology. The latest version of this certification is Java SE […]

Introduction Spring batch is a batch processing framework developed and maintained by the Spring framework team. It is one of the leading and popular batch processing framework in the market. Spring batch uses the chunk oriented processing for performing the batch processing which is more efficient for handling the large volume of data. Spring batch […]

What are Functional Interfaces? Functional interfaces are those interfaces that has single abstract method. According to Java 8 Specification, interface can be known as functional interface if there is a single method that is compliant with the below rules: If an interface has single abstract method, then it is known as the functional interface. A functional interface can have any […]

It selects all the enabled elements in the form. In general, it makes activate for doing operations on elements such as input type text elements, button element etc in the document. It is recommended that it must start with tag name, otherwise by defult it selects all the elements in the form by using defualt […]

The jQueryUI provides collapsible widget called accordion is a view of hierarchy so that only the roots of each branch are visible. It is widely used to manage large content and navigation lists on the website. We can easily create collapsing division within a webpage which is used to build accordion navigation, content boxes etc. […]

The jQueryUI Droppable plugin triggers when an accepted draggable is dropped ‘over’ this droppable. The interaction of droppable depends on draggable element. In general we can say that, target region for draggable element is droppable. We can create target on the page for dropping draggable elements. also read: JQuery Keydown, Keypress and Keyup JQUery Setting […]

The jQueryUI provides property called resizable() method which specifies whether element can be resizable or not by the user. The resizable plugin makes selected elements resizable by using icon which is at the bottom right of the element to resize. also read: JQuery Keydown, Keypress and Keyup JQUery Setting Drop Down Value JQuery prepend() and […]

The sortable is a flexible, sorting plugin for jQueryUI which allows rearranging the elements into a meaningful order so that we can analyze it more effectively. It enables sorting of elements by using drag and drop functionality to place the new element within the list and other elements will adjust to fit. The sortable event […]

The TreeMap class creates maps stored in a tree structure. It stores the key/ value pairs in a sorted order efficiently. The TreeMap class extends AbstractMap and implements the NavigableMap interface. It is a red-black tree based implementation. TreeMap is a sorted order collection, which is sorted according to the natural key or by providing […]

When we are using the collection of properties, if the input does not conform to the valid XML document type with the appropriate properties specification at that time an exception is thrown called InvalidPropertiesFormatException, to indicate operation could not be completed. This example explains about that exception. Java InvalidPropertiesFormatException Class Declaration In the above declaration, […]

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